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T&R 200A-3PH mk2 Operating And Maintenance Manual

3 phase secondary injection test set
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OPERATING AND MAINTENANCE MANUAL
Product:
Type:
DESIGNED AND MANUFACTURED BY:
T & R Test Equipment Limited
15-16 Woodbridge Meadows, Guildford, Surrey, GU1 1BJ, United Kingdom
Telephone:
01483 207428
Fax.:
01483 511229
TRUSTED & RELIABLE
For Software Version 2.06 and later
3 Phase Secondary Injection Test Set
200A-3PH mk2
e-mail:
Web:
1
sales@trtest.com
www.trtest.com

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  • Page 1 OPERATING AND MAINTENANCE MANUAL For Software Version 2.06 and later Product: 3 Phase Secondary Injection Test Set Type: 200A-3PH mk2 DESIGNED AND MANUFACTURED BY: T & R Test Equipment Limited 15-16 Woodbridge Meadows, Guildford, Surrey, GU1 1BJ, United Kingdom Telephone:...
  • Page 2 Warnings from cardiac pacemaker manufacturers state that strong magnetic fields may affect operation. Any high current unit such as the 200A-3PH mk2 should therefore not be operated by, or in the vicinity of persons fitted with cardiac pacemakers or any other electronic or electrical medical implants.
  • Page 3 SAFETY TERMS AND SYMBOLS The following safety symbols appear on the equipment: CAUTION/WARNING – Refer to manual Mains off Mains on The following safety symbols appear in this manual: This action or procedure may be dangerous if not carried CAUTION out correctly, and may cause damage to the equipment or connected equipment.

  • Page 5: Table Of Contents

    CONTENTS DESCRIPTION OF EQUIPMENT Front Panel Layout Installation 1.2.1 Environment 1.2.2 Supply Requirements 1.2.3 Supply Voltage Connections Functions 1.3.1 Main Current Outputs 1.3.2 Output Phase Relationships 1.3.3 Star-connected loads 1.3.4 Three phase loads with isolated elements 1.3.5 Current Metering 1.3.6 Auxiliary AC Voltage Output 1.3.7 Auxiliary Metering Input...
  • Page 6 2.4.1 Connections Test procedure – restraint angle 2.4.2 Test procedure – overcurrent timing 2.4.3 MAINTENANCE Regulator Brushes Removal of the 200A-3PH mk2 from Case STANDARD ACCESSORIES 4.1. Spares fuses supplied:- 4.2. Standard Accessories Supplied 4.3. Optional Accessories OPTIONAL DELTA-STAR TRANSFORMER Description 5.1.1...
  • Page 7 PERFORMANCE SPECIFICATION 6.1. Insulation Resistance at 1000V DC 6.2. Applied Voltage Test 6.3. Accuracy of Instrumentation and associated circuit components 6.3.1 Main Output Ammeter 6.3.2 Auxiliary Metering 6.3.3. Timing System REVISION DRAWINGS REQUIRED...

  • Page 9: Description Of Equipment

    The 200A-3PH mk2 is designed to be used on ‘dead’ systems (i.e. no externally supplied voltages are present on the test object. Under no conditions connect the 200A-3PH mk2 to a live system. Always check that the power to the device under test is off and the circuit is...

  • Page 10: Front Panel Layout

    Front Panel Layout Item Function Main output – phase A Phase A current output Main output – phase B Phase B current output Main output – phase C Phase C current output Ammeter range switch Selects ammeter range for main outputs Mains input fuses Mains input connector Earth terminal...

  • Page 11: Installation

    1.2.3 Supply Voltage Connections The 200A-3PH mk2 is supplied with a five core supply cable with a CEE 400V 16A 3P+N+E 5 pin plug fitted. If this connector is not correct for the supply environment an adaptor will be required.
  • Page 12 1.2.3.1 Operation from a Single Phase Supply If no three phase supply is available, it is possible to operate the 200A-3PH mk2 from a single phase supply with reduced functionality. To connect the set to operate from a one phase supply, connect L1, L2 and L3 to live, and N to neutral.

  • Page 13: Functions

    1.3.1 Main Current Outputs The main output on the 200A-3PH mk2 is used to inject current into test object to determine operating (setting) levels and trip times. The outputs are taken from the ‘main output’ terminal groups, and are switched on and off using the “OUTPUT ON” and “OUTPUT OFF”...

  • Page 14: Output Phase Relationships

    The outputs are rated for a maximum of four times the rated continuous current for 1 minute on / 15 minutes off. The complete curve for intermittent current ratings is shown in figure 1.3. % of continuous rated output current Figure 1.3 200A-3PH mk2 maximum ‘on’ times 1.3.2 Output Phase Relationships The phase relationship between the supply voltages and the output voltages are shown below.

  • Page 15: Star-Connected Loads

    Note that any phase can be shifted by 180° by reversing the connections for that phase. Equal currents are shown in the phasor diagrams overleaf, but unequal currents are equally valid. Delta output connections are not valid. 1.3.3 Star-connected loads The configuration and interconnection of the outputs depends on the configuration of the load.

  • Page 16: Three Phase Loads With Isolated Elements

    1.3.4 Three phase loads with isolated elements It is also possible to inject current into three isolated loads, as occurs on some three phase relays and MCBs. See figure 1.6. THREE PHASE LOAD Figure 1.6 Connections for load with isolated elements 1.3.5 Current Metering The main output currents are metered by a true RMS reading digital memory ammeter.

  • Page 17: Auxiliary Ac Voltage Output

    1.3.7 Auxiliary Metering Input The 200A-3PH mk2 has an auxiliary metering input which can be used to measure AC voltage or current, frequency, and the phase between the main output and the auxiliary input. The unit may measure either voltage or current derived quantities by selecting the appropriate input on the front panel.

  • Page 18: Voltage Measurement

    1.3.12 Timing System Specification The 200A-3PH mk2 is fitted with an integrated timing system that is linked to the main output and two sets of contact inputs. The system is highly flexible, and allows for the timing of all common protection devices and trips. The timer may also be used to time external events not...
  • Page 19 Timer information Timer range 0-999.999s/9999.99s/99999.9s auto-ranging Resolution 1ms/10ms/100ms 0.01% rdg 2d All modes except current operated Accuracy 0.01% rdg 4d Current operated mode Contact o/c voltage Contact s/c current 20mA LED on – contact open Contact indication LED off – contact closed Timer Modes Timer Start Timer Stop...
  • Page 20 1.3.12.1 General Procedure for Timing Tests To time the operation of any device a basic procedure needs to be followed to set the desired test current and to carry out the timing test. • Connect the device under test to the output of the unit and to the contact inputs as required.
  • Page 21 1 CONTACT mode using C1 is used to time auto-reclose relays (connected to a breaker auxiliary contact). The time recorded is the time between the breaker opening and the first re- closing of the breaker. Output ON pressed and released Current switches off when contact changes for 2...
  • Page 22 • This cycle continues until the OFF pushbutton is pressed. The display is left showing the last timer value. If auto-store mode is selected, all of the results for the test are written to the USB memory key, up to 100 times can be recorded. After t99 is stored the test ends and the output switches off automatically.
  • Page 23 To view the timing results press the left button to scroll through the stored time values. 0.00A 0.00A 0.00A 0.0V 0.300s Turn AUX AC ADJ clockwise 0.00A 0.00A 0.00A 0.0V 0.08s Figure 1.12 Displaying results for multiple auto-reclose timing Note: The auxiliary metering value displayed is dependent upon the position of the auxiliary metering mode select knob.

  • Page 24: Displayed Values And Messages

    1.4.2 Warning Messages In addition to the normal display screens, the 200A-3PH mk2 can display a range of warning messages if the unit trips on over-current or duty cycle or is too hot internally. If an over current or duty cycle trip occurs, the green ‘OFF’ pushbutton must be pressed to clear the trip condition.

  • Page 25: Overload Protection

    Overload Protection The 200A-3PH mk2 is fitted with a range of over protection devices, listed in the table below. Location Protection Mains supply T5A fuses on each phase Auxiliary ac output T315mA fuse Contact circuits Auto-resetting semiconductor fuses Main output...
  • Page 26 1.5.1.1 USB key A standard USB flash memory key is used to store the results files. The unit has been tested with keys up to 8Gb in size. Insert the USB key into the upper USB socket on the unit before starting to test. Most USB memory devices have an LED that indicates when the device is accessed.
  • Page 27 Results are not stored when the timer is set to OFF. This allows the output current to be set without storing any results to the output file. The example below shows data stored when testing a relay. "200A-3PH mk2 ","V2.09 C03","2.01","P1","A1" "Time","Date","Main A","Timer","Aux A","Aux V","Phase","Freq Hz","Aux Range","Comment"...
  • Page 28 Excel macros are provided on the supplied USB memory key. To use the macros open the “200A-3PH mk2 tools” Excel spreadsheet before opening the results CSV file. This will install a toolbar in Excel with buttons for formatting overcurrent and waveform results files.

  • Page 29: T&R Link Output Contact

    1.5.2 T&R link output contact The T&R link connector has an uncommitted output contact that changes state with the state of the main output. Pins 9 & 10 of the connector are connected when the output is switched The contact has a rating of: 0.34A @ 110VAC: Resistive load 0.22A @ 110VAC: Inductive load An optional accessory T&R link contact lead is available to convert this connection to 2x4mm...

  • Page 30: Phase Measurement

    (e.g. directional relays). In such situations, the auxiliary metering circuit may be used to measure the phase angle between the 200A-3PH mk2 output current and an externally generated phase-shifted voltage. The circuit configuration is shown below using a T&R Test Equipment DVS3 mk2 voltage source.
  • Page 31 Figure 1.20 Zero phase between voltage and current 1.5.3.2 Phase measurement between output current and an external current The auxiliary metering current input can be used to measure the phase of an external current (up to 10A) relative to the output current from phase A, B or C. To do this, connect the external current to the aux metering “com”...

  • Page 32: Operation

    OPERATION This chapter gives details of how to test many common types of protection device using the 200A-3PH mk2. Three Phase Over Current Relays The configuration shown in figure 2.1 is suitable for testing over-current relays, and will measure the time delay between the time when the “on” pushbutton is pressed and the time the relay trips.

  • Page 33: Test Procedure

    2.1.2 Test procedure Set the output controls to zero (anti-clockwise) and the timer mode to “OFF”. Select the desired ammeter range. Press the “output on” pushbutton and increase the desired test current for each phase. Switch the output off using the “OUTPUT OFF” pushbutton. Select “INTERNAL START”...

  • Page 34: Test Procedure

    Testing CBE’s MCB’s and other devices with no auxiliary contacts is possible using the current operated timer mode on the 200A-3PH mk2. This mode starts the timer when the output current on the selected phase exceeds 20% of the selected current range, and stops the timer when the current on the selected phase falls below 20% of range.

  • Page 35: Connections

    2.3.1 Connections Ensure that the outputs are switched off and that the device under test is isolated before making any connections. Connect the main outputs as shown in figure 2.3, selecting the most appropriate ammeter range for the device under test. Set the phase select switch to trigger the timer on the desired phase.

  • Page 36: Directional Relays (In Conjunction With Dvs3 Mk2 Voltage Source)

    Figure 2.4 Connections for directional overcurrent relay The phase locking between a 200A-3PH mk2 and a DVS3 mk2 may be simplified considerably using the T&R link phase locking lead as shown in figure 2.5. Figure 2.5 Connections for directional overcurrent relay using T&R Link phase locking...

  • Page 37: Connections

    Set the AMMETER RANGE switch to 20A range, and the TIMER MODE switch to phase A. Phase A of the DVS3 mk2 may be connected to the auxiliary input of the 200A-3PH mk2 as a double-check on the phase angle if required. Refer to figure 2.4 for connections.

  • Page 38: Test Procedure - Overcurrent Timing

    Disconnect the relay contacts from the DVS3 mk2 and connect to contact set 1 on the 200A- 3PH mk2 (see figure 2.7). Disconnect the 200A-3PH mk2 phase A from the DVS3 mk2 (this may be left connected if the test current will not exceed 5A or if using the T&R Link phase lock connection between a 200A-3PH mk2 and DVS3 mk2.).

  • Page 39: Maintenance

    Figure 3.1 Regulator brush Regulator Brush Removal of the 200A-3PH mk2 from Case Locking Screw To remove the instrument from its case, the following procedure should be used:- Remove the lid from the case, and place the unit on its face, such that it is resting on the handles on the front panel.

  • Page 40: Standard Accessories

    STANDARD ACCESSORIES 4.1. Spares fuses supplied:- a. 3 off T5A 1¼ inch mains supply b. 1 off T315mA 20mm auxiliary supply c. 1 off F10A auxiliary current input 4.2. Standard Accessories Supplied a. Mains input lead. b. 3 off 5m 25mm blue output leads c.

  • Page 41: Optional Delta-Star Transformer

    OPTIONAL DELTA-STAR TRANSFORMER Description The 200A-3PH mk2 Delta-Star transformer allows the 400V 200A-3PH mk2 to be used where only a three wire three phase supply is available. It also allows operation of the unit from 115V, 230V, and 400V line-line supplies.

  • Page 42: Front Panel Layout

    400V10% 3 phase 3 wire 1500VA max • 440V10% 3 phase 3 wire 1500VA max 5.1.2.2 Three Phase Output A three phase output is provided to supply the 200A-3PH mk2. Do not connect any other type of equipment to this output. Voltage: 400V10%...
  • Page 43 5.1.2.3 Single phase output A single phase output is provided to supply the DVS3 mk2. Do not connect any other type of equipment to this output. Voltage: 230V10% single phase Type: Single phase isolated from both the mains and three phase outputs Rating 150VA continuous/300VA 5 min on/15 min off...

  • Page 44: Operation

    Operation 5.2.1 Supply Voltage Connections The 200A-3PH mk2 delta-star transformer is supplied with a 4 core supply cable. The cores are marked to ensure correct phase rotation. The mains input lead is marked as follows: Brown Black Grey Earth Green and yellow...
  • Page 45 3 WIRE SUPPLY OPTIONAL T&R LINK LEAD Figure 5.3 Connections between units...

  • Page 46: Performance Specification

    PERFORMANCE SPECIFICATION 6.1. Insulation Resistance at 1000V DC The insulation resistance will not be less than 10 megohms between mains input to frame and all isolated outputs, and all combinations of isolated output to isolated output. 6.2. Applied Voltage Test Mains input to frame: 2.0kV RMS for 1 minute.

  • Page 47: Revision

    REVISION Product / Type: Secondary Current Injection Test Set / 200A-3PH mk2 File: 200A-3PH mk2 manual v3.doc Author: Issue / Date: 24/02/17 Modified By: K. Mupotsa Checked By: G Biggs Date: 30/05/17...

  • Page 48: Drawings Required

    DRAWINGS REQUIRED A2/001947 latest issue (200A-3PH mk2)

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